springboot的注解配置：详见

一、编写service

package org.yq.HelloWorld.service;
//业务逻辑层
public class StudentService {
	//dao 
//	private StudentDao studentDao  ;
//	set
}

二、编写spring.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

	<bean id="studentService" class="org.yq.HelloWorld.service.StudentService">
	</bean>
	

</beans>

三、在主配置类HelloWorldApplication.java中添加注解@ImportResource(locations={"classpath:spring.xml"})

package org.yq.HelloWorld;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ImportResource;
@ImportResource(locations={"classpath:spring.xml"})
@SpringBootApplication
public class HelloWorldApplication {
	public static void main(String[] args) {
		SpringApplication.run(HelloWorldApplication.class, args);
	}
}	

四、调用service

@Autowired
ApplicationContext context ;//spring ioc容器

@Test
public void test(){
    StudentService stuService = (StudentService)context.getBean("stuService") ;
    System.out.println(stuService+"=========");
}

五、查看控制台是否有打印